Patents by Inventor Kouichi Sakai

Kouichi Sakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240085663
    Abstract: A mirror support mechanism includes three first supporting members and three second supporting members. Each first supporting member includes a mirror supporting portion that is in contact with and support a corresponding one of three supported surfaces provided on the supported portion with rotational symmetry of 120 degrees around an optical axis, and two first beam portions connected to both sides of the mirror supporting portion. Each second supporting member includes a supporting portion to which ends of two first beam portions adjacent to each other are connected, the ends being not connected to the mirror supporting portion, and two second beam portions connected to both sides of the supporting portion, an end of the second beam portion not connected to the supporting portion being supported by a structure member provided on the rear side of the reflecting mirror.
    Type: Application
    Filed: January 28, 2022
    Publication date: March 14, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tomoya HATTORI, Takayuki SAKAI, Atsumu OIKAWA, Kouichi TAKEDA
  • Patent number: 6656153
    Abstract: A balloon catheter of the present invention has an outer tube having a first lumen inside it. At the distal end of the outer tube is connected the proximal end of the balloon portion so that a balloon space is formed inside it, the distal end of the balloon portion is joined to a cylindrical front tip portion, and pressurized fluid is introduced into and released from the balloon space through the first lumen of the outer tube so as to make the balloon portion expand or contract. Inside the first lumen of the outer tube is arranged an inner tube having a second lumen freely slidable in the axial direction. The distal end of the inner tube projects out from the distal end of the outer tube and is detachably attached to the front tip portion. The balloon catheter of the present invention may have a guidewire detachably attached to the front tip portion rather than providing the inner tube.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: December 2, 2003
    Assignee: Nippon Zeon Co., LTD
    Inventors: Kouichi Sakai, Tetsuo Toyokawa, Takahiro Iida
  • Patent number: 5833672
    Abstract: A double tube from which a balloon catheter having a high rigidity and a low fluid resistance can be easily produced by means of an extruder or the like, an apparatus for producing the double tube, a balloon catheter produced by using the double tube, and a process for producing the balloon catheter are provided. The double tube comprises an outer tube having a lumen extending from the distal end to the proximal end, and an inner tube which is provided within the outer tube and has a lumen extending from the distal end to the proximal end, wherein a longitudinal member in the strip form is provided as a connecting member which continuously connects the inner surface of the outer tube to the outer surface of the inner tube in the axial direction. A balloon catheter can be easily produced by using this double tube.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: November 10, 1998
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Keiichi Kawata, Hidenobu Urata, Tetsuo Toyokawa, Kouichi Sakai, Masaru Uchiyama
  • Patent number: 5711754
    Abstract: A balloon catheter has an inner tube communicating with a blood introduction port provided at a tip of the balloon portion. The inner tube is affixed to the inner wall of the catheter tube by adhesion, melt-bonding, or integral formation. The balloon catheter has a small channel resistance in the channel where the pressurized fluid which expands and contracts the balloon portion flows, even when the catheter tube has been bent, and enables expansion and contraction of the balloon portion with a good response. Another balloon catheter has the balloon portions at a range of the end sides of the balloon portions smaller in sectional area compared with the balloon portions at the tip sides. The catheter is able to effectively prevent side effects which occur only rarely but which are serious when they do occur. The catheter impairs as little as possible the effect of assisting the heart action inherent to the IABP method without special measurement of the diameter of the patient's blood vessels.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: January 27, 1998
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Tetsuo Toyokawa, Kouichi Sakai, Masaru Miyahara, Takashi Tsuji, Donald Robert Kirkpatrick
  • Patent number: 5702315
    Abstract: An autotensioner for use in applying a tension to a moving belt, includes a bracket secured to an engine body and having a projection, a rocking member rockingly mounted to the bracket through a first axle and having an arm, a pulley rotatably mounted to the rocking member through a second axle for applying the tension to the moving belt, and a damper device provided between the projection of the bracket and the arm of the rocking member.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: December 30, 1997
    Assignee: NSK, Ltd.
    Inventors: Kouichi Sakai, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5702510
    Abstract: The aqueous ink of a pigment type comprises a pigment, water, a water-soluble solvent and a sulfite, and may further comprise a dispersant. An example of the dispersant comprises a copolymer of a monomer (a) represented by general formula (A), and one or more monomers (b) selected from the group consisting of compounds represented by general formulae (B) and (C): ##STR1## wherein AO represents an oxyalkylene group having 2 to 3 carbon atoms, and n represents an integer of 110 to 300.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: December 30, 1997
    Assignee: Kao Corporation
    Inventors: Satoshi Yoshida, Hideki Yanagi, Kouichi Sakai, Masayoshi Nawa
  • Patent number: 5695467
    Abstract: A catheter having a catheter tube. The catheter tube is comprised of a base tube comprised of a hard plastic with a linear elastic modulus of at least 100 kg/mm.sup.2 and a surface tube of an anti-thrombogenic material covering the outer circumference of the base tube. Further, The present invention provides a catheter set which is used when inserting the catheter and the like into the blood vessel of a patient. The catheter set comprises a retaining sheath whose distal end is inserted into a blood vessel and which has a hemostatic valve at its proximal end, a catheter having a catheter tube, which is inserted from the proximal end of the retaining sheath and thereby inserted into the blood vessel, and a holding ring for affixing said retaining sheath to the outer circumference of said catheter tube at any position in the axial direction.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 9, 1997
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Tetsuo Toyokawa, Kouichi Sakai, Satoshi Morikawa
  • Patent number: 5683347
    Abstract: A balloon catheter used for intra-aortic balloon pumping (IABP). In the balloon catheter, an outer diameter of a catheter tube is not made constant in the axial direction. Rather, the outer diameter of the catheter tube from a hemostatic valve to a bifurcation, the portion which is positioned outside the patient's blood vessel, is made 3 to 30 percent larger than the outer diameter of the catheter tube from the balloon portion to the hemostatic valve, which is positioned inside the patient's blood vessel. The bifurcation has a first passage and a second passage. The first passage is communicating with a shuttle gas port and is disposed straight along the direction of the axial center of the catheter tube.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: November 4, 1997
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Takashi Kawabata, Tetsuo Toyokawa, Kouichi Sakai
  • Patent number: 5631309
    Abstract: An aqueous ink for ink jet recording comprises a dye and a polymeric compound which can undergo a decarboxylation reaction. In an ink jet recording method, a recording operation is carried out by jetting a liquid droplet of the ink from a nozzle to a recording medium by using thermal energy.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: May 20, 1997
    Assignee: Kao Corporation
    Inventors: Hideki Yanagi, Kouichi Sakai, Masayoshi Nawa, Koichi Nakamura
  • Patent number: 5591351
    Abstract: Automobile parts comprising polybutylene naphthalenedicarboxylate, which are used at such portion(s) of an automobile that come to contact with a fuel, an oil, combustion gas, or the like are provided. Furthermore, engine canister comprising the same polymer as above is provided. These automobile parts or engine canisters exhibit excellent mechanical strength, heat resistance, dimensional precision, chemical resistance, acid resistance, alkali resistance, and impermeability to gasoline and gasohol.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: January 7, 1997
    Assignee: Teijin Limited
    Inventors: Toshio Hatayama, Mie Sasaki, Takeshi Kojima, Kouichi Sakai
  • Patent number: 5569105
    Abstract: An autotensioner for use in applying a tension to a moving belt, having a damper apparatus which can follow a sudden change in tension of the belt by improving the piston and plunger structure of the damper apparatus so that the viscous fluid has a liquid surface kept high even when the plunger rises its uppermost position to prevent air from entering underneath the piston.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: October 29, 1996
    Assignee: NSK, Ltd.
    Inventors: Kouichi Sakai, Shuhei Aoki, Shigenori Murata, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5518459
    Abstract: An autotensioner for use in applying a tension to a moving belt, comprises a bracket secured to an engine body and having a projection, a rocking member rockingly mounted to the bracket through a first axle and having an arm, a pulley rotatably mounted to the rocking member through a second axle for applying the tension to the moving belt, and a damper device provided between the projection of the bracket and the arm of the rocking member.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: May 21, 1996
    Assignee: NSK, Ltd.
    Inventors: Kouichi Sakai, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5514073
    Abstract: A balloon catheter has an inner tube communicating with a blood introduction port provided at a tip of the balloon portion. The inner tube is affixed to the inner wall of the catheter tube by adhesion, melt-bonding, or integral formation. The balloon catheter has a small channel resistance in the channel where the pressurized fluid which expands and contracts the balloon portion flows, even when the catheter tube has been bent, and enables expansion and contraction of the balloon portion with a good response. Another balloon catheter has the balloon portions at a range of the end sides of the balloon portions smaller in sectional area compared with the balloon portions at the tip sides. The catheter is able to effectively prevent side effects which occur only rarely but which are serious when they do occur. The catheter impairs as little as possible the effect of assisting the heart action inherent to the IABP method without special measurement of the diameter of the patient's blood vessels.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: May 7, 1996
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Tetsuo Toyokawa, Kouichi Sakai, Masaru Miyahara, Takashi Tsuji, Donald R. Kirkpatrick
  • Patent number: 5480358
    Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: January 2, 1996
    Assignee: NSK Ltd.
    Inventors: Kouichi Sakai, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5460607
    Abstract: A balloon catheter used for intra-aortic balloon pumping (IABP). In the balloon catheter, an outer diameter of a catheter tube is not made constant in the axial direction. Rather, the outer diameter of the catheter tube from a hemostatic valve to a bifurcation, the portion which is positioned outside the patient's blood vessel, is made 3 to 30 percent larger than the outer diameter of the catheter tube from the balloon portion to the hemostatic valve, which is positioned inside the patient's blood vessel. The bifurcation has a first passage and a second passage. The first passage is communicating with a shuttle gas port and is disposed straight along the direction of the axial center of the catheter tube.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: October 24, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Takashi Kawabata, Tetsuo Toyokawa, Kouichi Sakai
  • Patent number: 5458542
    Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: October 17, 1995
    Assignee: NSK Ltd.
    Inventors: Kouichi Sakai, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5352160
    Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: October 4, 1994
    Assignee: NSK Ltd.
    Inventors: Kouichi Sakai, Hayato Oumi, Hiroshi Suzuki
  • Patent number: 5290835
    Abstract: An electrical or electronic part having excellent resistance to moist heat, such as a coil bobbin, a condenser case, an IC carrier, a plug, a socket or a fuse case, formed from a polybutylene naphthalenedicarboxylate resin as a raw material; and a flame-retardant resin composition and an electrical part therefrom are also provided. The flame-retardant resin composition exhibits high fluidity and forms little burr, and the electrical part has excellent flame retardancy and well-balanced properties.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: March 1, 1994
    Assignee: Teijin Limited
    Inventors: Toshio Hatayama, Mie Sasaki, Takeshi Kojima, Yoshinari Ogawa, Sakae Shimotsuma, Kouichi Sakai
  • Patent number: 5178930
    Abstract: A thermal transfer recording medium comprising a support and a heat-fusible ink layer, coated on the support, which comprises a colorant and a binder. The binder comprises a polyurethane having bisphenol units or a polyether having bisphenol units and an hydroxyl group at the terminals. The thermal transfer recording medium provides a transferred image with a high quality regardless of the transferring paper.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: January 12, 1993
    Assignee: Kao Corporation
    Inventors: Kouichi Sakai, Sadashi Ueda, Keizou Takahashi, Hiroshi Shibano
  • Patent number: 5053894
    Abstract: A magnetic recording and reproducing apparatus, such as a compact cassette tape recorder, a digital audio cassette tape recorder and the like, has two sets of mechanisms and includes a pair of detect switches for detecting the presence of tape cassettes mounted on the respective mechanisms, a set of operation switches for operating the mechanisms, and a controller for controlling the operation of the mechanisms to automatically select the one mechanism onto which a tape cassette has been mounted subsequent to a cassette having been mounted on the other mechanism, and to operae the one selected mechanism.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: October 1, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kouichi Sakai